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be Quiet! Straight Power 12 750W Power Supply, ATX 3.0, 80 Plus Platinum, virtually inaudible Silent Wings Fan, for PCIe 5.0 and PCIe 6+2 Graphics Cards, 12VHPWR Cable Included
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be Quiet! Straight Power 12 750W Power Supply

Bottom line: The be Quiet! Straight Power 12 750W Power Supply ($366.90 on Amazon as of 2026-10-06): 80 PLUS Platinum certified, up to 93.8% efficiency under load; main trade-off: 750W ceiling limits headroom for dual-GPU or 600W-class cards.

$366.90

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Buy on Amazon — $366.90 Compare to similar power supplies

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 80 PLUS Platinum certified, up to 93.8% efficiency under load
  • ✓ Native 12VHPWR cable included for PCIe 5.0 graphics cards
  • ✓ Handles power excursions up to 1500W, double its 750W rating
  • ✓ Single 12V rail delivers the full 750W continuous
  • ✓ Silent Wings fan uses fluid-dynamic bearing and 6-pole motor

Cons

  • ✗ 750W ceiling limits headroom for dual-GPU or 600W-class cards
  • ✗ Only 4 PCIe 6+2-pin connectors for current-gen GPU setups
  • ✗ ATX 3.0 rather than the newer ATX 3.1 revision

Manufacturer description

be quiet! Straight Power 12 unité d'alimentation d'énergie 750 W 20+4 pin ATX ATX Noir

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SpecPicks Verdict

SpecPicks scored be Quiet! Straight Power 12 750W Power Supply using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. be quiet!'s power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Straight Power 12 750W is certified with 80 PLUS Platinum and an energy efficiency rating of up to 93.8%. This provides lots of benefits for your high-end system, including less power consumption and an overall cooler and quieter operation.
  • Straight Power 12 750W is an ATX 3.0 PSU and comes with both native integration of the 12VHPWR connector for next-generation PCIe 5.0 graphics cards, and 4 PCIe 6+2-pin connectors for support of current-gen GPUs. This makes the PSU extremely versatile and the perfect choice for powerful systems of today and the ones to come.
  • Straight Power 12 offers 750W of continuous power with one massive 12V rail. Even if the graphics card demands excessive power for a short time: Straight Power 12 750W handles power excursions up to double its rated power with ease. This ensures reliable operation with the next generation of processors and graphics cards.
  • The high-end Silent Wings fan delivers best-of-class airflow yet produces very little noise. This is thanks to its unique, optimized fan blade design along with an advanced fluid-dynamic bearing and 6-pole fan motor that largely eliminates operational noise, has a super-long life and minimal power consumption.
  • The funnel-shaped fan inlet of the Straight Power 12 750W increases airflow while reducing unwanted turbulence for a higher cooling performance. The wire-free design inside allows the cool air to reach all components which ultimately leads to a longer lifespan.

Full Specifications

Brandbe quiet!
Wattage750 watts
Fan Size12 centimeters
Model NameSTRAIGHT POWER 12 750W
Unit Count1 Count
Form FactorATX
Model NumberBN336
Connector TypeATX
Cooling MethodAir
Number of Fans1
Output Wattage750 watts
Item Dimensions6.3 x 5.91 x 3.39 inches
Mfr Part NumberBN336
Compatible DevicesPersonal Computer
Power Supply DesignInternal
Maximum Input Voltage240 volts_of_alternating_current
Minimum Input Voltage90 volts_of_alternating_current
Item dimensions L x W x H6.3 x 5.91 x 3.39 inches
System Bus Connector Type12 Pin
Connector Type Used on CableATX
Full listing titlebe Quiet! Straight Power 12 750W Power Supply, ATX 3.0, 80 Plus Platinum, virtually inaudible Silent Wings Fan, for PCIe 5.0 and PCIe 6+2 Graphics Cards, 12VHPWR Cable Included

Ready to buy?

be Quiet! Straight Power 12 750W Power Supply, ATX 3.0, 80 Plus Platinum, virtually inaudible Silent Wings Fan, for PCIe 5.0 and PCIe 6+2 Graphics Cards, 12VHPWR Cable Included is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $366.90

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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be Quiet! Straight Power 12 750W Power Supply, ATX 3.0, 80 Plus Platinum, virtually inaudible Silent Wings Fan, for PCIe 5.0 and PCIe 6+2 Graphics Cards, 12VHPWR Cable Included
$366.90
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